Cassem meeting eads paris
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

CASSEM meeting – EADS Paris PowerPoint PPT Presentation


  • 45 Views
  • Uploaded on
  • Presentation posted in: General

CASSEM meeting – EADS Paris. Active Structures Laboratory www.ulb.ac.be/scmero. Arnaud Deraemaeker. Motivations. To be able to predict the closed-loop performance for collocated systems Important for structures not tested on ground (satellites …). Principle of collocated control.

Download Presentation

CASSEM meeting – EADS Paris

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Cassem meeting eads paris

CASSEM meeting – EADS Paris

Active Structures Laboratorywww.ulb.ac.be/scmero

Arnaud Deraemaeker


Motivations

Motivations

  • To be able to predict the closed-loop performance for collocated systems

  • Important for structures not tested on ground (satellites …)


Principle of collocated control

Principle of collocated control

  • Unconditional stability

  • Performance = distance pole-zeros of open-loop transfer function

  • Zeros are the most difficult to predict (very sensitive to local strain distribution for piezo patches)


Available test structures

Available test structures

  • Composite plate with piezo ceramics (d31-d32)

  • Composite plate with macro fiber composites (MFC)

  • Boom with MFC


Cassem meeting eads paris

= 0

Piezo patch

Base plate

Test structure 1

Actuator


Cassem meeting eads paris

(sensor)

(sensor)

(sensor)

Experimental / numerical results

Experimental FRF between p1 and pi

Numerical FRF between p1 and pi


Cassem meeting eads paris

Test structure 2


Macro fiber composites

Macro Fiber Composites


Cassem meeting eads paris

Experimental / numerical results


Cassem meeting eads paris

Test structure 3


Cassem meeting eads paris

Numerical results


Crucial points for the modeling of collocated piezo systems

Crucial points for the modeling of collocated piezo systems

  • Composite material properties play an important role on the poles of the structure

  • Actuator properties (d31, d32 as well as mechanical) play an important role on the zeros

  • Modeling of excentricity (mid-plane) is important for the modeling of the zeros


What is needed

What is needed ?

  • Mechanical properties of composite

  • Mechanical / electrical properties of PZT patches

  • Mechanical / electrical homogeneized properties of the MFCs : this is a difficult problem !

  • Can you provide this information ?


  • Login